1 EXHIBIT 11 LOGIC DEVICES INCORPORATED Computation of Earnings per Common Share (unaudited) Three months ended September 30, 1997 and 1996 1997 1996 ---------- ---------- Weighted average shares of common stock outstanding 6,121,750 6,121,750 Dilutive effect of common stock options and stock warrants 317,000 100,000 ---------- ---------- Weighted average common and common share equivalents 6,438,750 6,221,750 ========== ========== Net income $ 2,500 $ 95,300 ========== ========== Net income per common share equivalent $ .00 $ .02 ========== ========== 16 of 18 pages 2 EXHIBIT 11 LOGIC DEVICES INCORPORATED Computation of Earnings per Common Share (unaudited) Nine months ended September 30, 1997 and 1996 1997 1996 ----------- ----------- Weighted average shares of common stock outstanding 6,121,750 6,121,750 Dilutive effect of common stock options and stock warrants 244,666 100,000 ----------- ----------- Weighted average common and common share equivalents 6,366,416 6,221,750 =========== =========== Net income $ (406,600) $ 449,800 =========== =========== Net income per common share equivalent $ (0.06) $ .07 =========== =========== 17 of 18 pages